3. Is (5,-6,4) on the plane determined by the span of {(4,9,2), (3,1,2)}

5. Sketch the parallelepiped formed by the vectors (3,5,2), (6,1,3), (4,3,8).

2. How much horizontal work is done if Mrs. Bethany is pulling a trolley on a flat surface for 70 m and she is pulling with a force of 80 N along with the handle which is at an angle of 43 above the horizontal

7. At what bearing should a ship aim in order to travel at a bearing of 98 if the 23 km/h wind is pushing the boat at a bearing of 072 and the ship's propellers are pushing it at a speed of 89 km/h?